Weather in Burnie in September

A hard month. September is a hard month in Burnie, and worth planning around. You should expect rain on 18 days of the month, which is more days wet than dry.

September ranks 10 of 12 — near the bottom of Burnie's year. February is the month that works, and the swing between the two is 47 points, which is a different holiday rather than a slightly better one.

Rain on 18 days, 3 of them heavy. Enough to need a plan B, not enough to need a plan around it. Layers, and a genuinely waterproof outer — at 13 °C the difference between a good day and a miserable one is entirely down to what you are wearing.

What the averages hide

Averages flatten a month, and this one hides a few things: the day barely swings — 4.6 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest September day reached 18.1 °C and the coldest night fell to 3.8 °C, and the wettest single day dropped 55 mm — roughly 48% of the month's rain in one day.

September is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest September on record still delivered 167 mm against 30 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 115 mm average is a reasonable planning figure, not a promise.

Wind is light at 10.3 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 84%, which at 13 °C means damp rather than muggy — the kind of cold that gets into a coat and stays there.

How September sits in the year

Temperatures hold steady either side: 12 °C in August, 13 here, 14.6 in October. Nothing about the timing within the month matters much.

Daylight in September

11.8 hours of daylight, gaining 1.3 hours across the month. That is between Burnie's extremes of 15.1 and 9.2 hours, so days are long enough not to constrain the plan.

Sea temperature

The sea sits at about 12.5 °C in September — too cold to swim without a wetsuit. The sea peaks at 18.3 °C in February and bottoms out at 12.5 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

September in Burnie versus nearby

If Burnie is one option among several, the nearby comparison is worth making. Devonport is close enough to be a coin toss — within a degree on temperature, 5 days less rain. Launceston is a better bet in September — within a degree on temperature, 5 days less rain.

So: September is a compromise. February is 41 points better and is what Burnie is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Burnie

See all twelve months in Burnie, or where else to go in September.